oilhole

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oilhole — ˈ ̷ ̷ˌ ̷ ̷ noun : a small hole through which oil is injected to lubricate a mechanical bearing surface … Useful english dictionary
oilhole drill — noun also oil drill : a twist drill having oilholes through which a lubricant is fed to its cutting edge while drilling … Useful english dictionary
oil groove — noun : a groove in the bearing surface of a machine part that distributes lubricating oil injected through an oilhole … Useful english dictionary
oil drill — noun see oilhole drill … Useful english dictionary

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